Device for manufacturing dental backings.



A. H. MUELLER.

DEVICE FOR MANUFACTURING DENTAL BAOKINGS. APPLICATION IILED MAR. 10, 1913.

1,096,447, Patented May 12, 1914.

(fig 4.4.

14 {Z W a '10 0165565 [IZIJflIZZOZ I 04 Adam JZ/Voeller UNITED STATES PATENT ()FFIGE.

ADAM I-I. MOELLER, OF ELYRIA, OHIO.

DEVICE FOR MANUFACTURING DENTAL BACKINGS.

Application filed March 10. 1913.

1 'o alt whom it may concer /1.:

lie it known that I, ADAM II. hlonnnen, a citizen of the United States, residing at Elyria, in the county of Lorain and State of Ohio, have invented certain new and useful Improvements in Devices for Manufacturing Dental Backings; and I do hereby declare th following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

h Iy invention relates to devices for manufacturing dental backings, and more particularly to a form of device which can be conveniently incorporated in a hand tool, such as shown in the embodiment of my in vention illustrated in the accompanying drawing.

In what is known in dentistry as bridge work, the artificial tooth generally is com'- posed of two parts--the facing, which is the representation of the tooth, and the backing, which usually consists of a flat piece of suitable material fastened to the facing and to the adjacent tooth on either side thereof. The facing may be connected to the backing by cutting a groove in the facing, preferably a vertical groove, and forming a corresponding ridge or tongue upon the backing. When connected together, the ridge slips into the groove, so that the facing is firmly and securely held to the backing. It is toward the manufacture of these backings and forming the ridge thereon that my invention is more particularly directed.

Other objects of my invention and the invention itself will be better understood from a description of the particular embodiment illustrated in the accompanying drawings.

Figure 1 is a side elevation of an embodiment of my invention. Fig. 2 is an end elevation of the jaws of the embodiment shown in Fig. 1. Fig. 3 is a perspective view of the lower jaw of the embodiment shown in Fig. 1. Fig. 1 is an end elevation of a dental backing after the first operation. Fig. 5 is an end view of the instrument showing the backing being operated upon to form the rib 22. Fig. 6 is a portion of the lower jaw showing how the final operation is performed.

Referring now to the drawings and to the particular embodiment there illustrated, at 1 and 5 I show the jaws of the device, and

Specification of Letters Patent.

Patented M ay 12, 1914.

Serial No. 753,145.

for the sake of convenience, I will call 4; the

upper jaw and 5 the lower jaw. These jaws, as shown, are adapted to be brought together in parallel relation by suitable means, such as handles 6 and 7. These handles may be pivoted together, as shown at S and connected to the jaws by suitable means, such as screws or bolts 9 and 10. The jaws are provided with means for forming and shaping the backing. In the device illustrated in the drawing, the upper jaw is provided with a punch 11 and the lower jaw, with a corresponding recess 12. A punch 11 is here shown as extending across the jaw and as being integral with said jaw. The blank for the backing is placed under the punch and the jaws closed together, depressing a portion of the blank and forming a channel therein.

Upon the extreme ends of the jaws are formed grooves 1 1. A tongue 15 preferably made of wire is provided and is so positioned that it is inclosed within the grooves 141- when the jaws are closed. In the form shown, this tongue is connected at one end 16 with one of the jaws, preferably the lower aw.

I11 the embodiment illustrated, a hole 17 is bored into the lower jaw and the end 16 of the tongue is stuck into this hole. In the next operation, the backing 21 is slipped over the tongue, the tongue projecting into the channel formed by the punch 11 and the recess 12, the wings of the backing extending along the faces 18 and 19 of the jaws. The jaws are then closed, whereupon the tongue forms a bead 22 along the channel in the backing. The reformed channel or ridge is then slipped :into the recess 20 in the bottom jaw with the wings of the backing extending along the face of the jaw. In this position, the jaws are clamped down and the ridge takes the form of a recess 20, completing the operation and preparing the backing for use.

It will. be apparent that the tongue 15 may be fastened to the jaw in any suitable man ner. The parts for performing the operation may be arranged in any suitable way upon the jaws, and in fact, it will be obvious to those skilled in the art that numerous and extensive departures from the forms and details of the apparatus shown here may be made without departing from the spirit of this invention, this form being shown solely for the purpose of clearly illustrating the invention.

1. In a device of the class described, the combination of a pair of jaws, means whereby the jaws may be brought together, a transverse slot adjacent'the extreme end of each jaw and a tongue connected at one end to one of said jaws and free-at the other end, said tongue being inclosed within said slots when the jaws are brought together.

2. In a device of the class described, the combination of a pair of jaws, means whereby the jaws may be brought together, a substantially transverse slot adjacent to the 6X- treme end of one of said jaws and a tongue mounted at one end of said jaws and free at the other end, said tongue extending along said slots when the jaws are brought to gether.

3. I11 a device of the class described, the combination of a pair of jaws, means whereby the jaws may be brought together, a transverse slot in each of said jaws, and a tongue connected at one end to one of said jaws and free at the other end, said tongue being inclosed within said slots when the jaws are brought together.

In witness whereof, I afliX my signature in the presence of two witnesses this 6th day of March, 1913.

ADAM H. MUELLER.

W'itnesses JOHN S. Rrcrnay, F. O. RIOHEY.

Copies of this patent may be obtained for five cents each. by addressing the Gommissioner of Patents. Washington, D. 0. 

